In this prospective feasibility study, it's planned to use a 3D virtual mixed reality model based on the preoperative PSMA PET. The model will be evaluated as an educational tool for patients and surgeons in cases of primary high-risk prostate cancer and prostate cancer recurrence with PSMA PET-positive lymph node metastasis. In general, the detection rate of PSMA-guided surgical procedures will investigate with the histological result as the reference. Furthermore, the influence of 3D visualization on the movement of surgical instruments and the efficiency of targeted resection is analyzed the help of image data from two cameras and the position data of the instruments during robot-assisted procedures. Additionally, will the investigators develop and examine two navigation methods (landmark-based registration and visual tracking) in a retrospective approach that use the preoperative PSMA PET and the image and instrument position data captured during robotic procedures. The short-term oncological outcomes (PSA response rates) will examine as an indicator of the successful removal of macroscopic PSMA-PET-positive lesions and the quality of life (QoL) of patients.
